Learning Mastery Add-On

During the previous school year (and I guess before Canvas updated their website), a co-worker had created an add-on that allowed for an individual student to be assessed on a single outcome. When clicking on an outcome for a specific student in the learning mastery grade book, a rubric would pop op on the right side of the screen. Does anyone know if this is something that is available still? I'd love to be able to record an on-the-spot assessment for students without creating a whole assignment for a class or creating a whole assignment and then have to assign it to a single student. Thanks!

I'm not familiar with what you are describing, but have you ever looked at the Canvas Magic Marker App for iOS? It works kind of how you are describing. You put students into Tables of 6 and then can assess them against Outcomes in your course by swiping up or down for an entire table at a time, or just individual students at a time.